Q. Compare and contrast bio-mass and hydro electricity as sources of energy.

Q.

What are the limitations of extracting energy from

(a) wind

(b) waves

(c) tides

Q. A solar water heater cannot be used to get hot water on

1. a sunny day
2. a cloudy day
3. a hot day
4. a windy day

Q. Compare and contrast fossil fuels and the Sun as direct sources of energy.

Q. What are the environmental consequences of the increasing demand for energy? What steps would you suggest to reduce energy consumption?

Q.

On what basis would you classify energy sources as

a) renewable and non-renewable?

b) exhaustible and inexhaustible?

Are the options given in (a) and (b) the same?

Q. Most of the sources of energy we use represent stored solar energy. Which of the following is not ultimately derived from the Sun's energy?

1. Geothermal energy
2. Wind Energy
3. Nuclear energy
4. BioMass

Q. What are the qualities of an ideal source of energy?

Q. Which of the following is not an example of a bio gas source of energy?

1. Wood
2. Gobar
3. Nuclear Energy
4. Coal

Q. What are the advantages and disadvantages of using a solar cooker? Are there places where solar cookers would have limited utility?